JP2015021399A - Rotary pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change flow-in and flow-out directions of fluid even after a rotary pump is assembled on a base part.SOLUTION: The rotary pump comprises: a planar base part 10; a rotary driving part 20 having a rotation shaft 21; an annular flange 30 having a first fixing position 33 and a second fixing position 34 isolated from each other by a predetermined angle around a center shaft C; a gear box 50 having a flow-in hole 61 and a flow-out hole 62 provided on an outer periphery of a gear box body 52; a driving shaft 80 pivoted by and housed in the gear box 50, and connected coaxially with the rotation shaft 21; a driven shaft 90 pivoted by and housed in the gear box 50 rotatably around a shaft parallel to the center shaft C, and driven-rotating reversely to the driving shaft 80; and shaft position adjustment means 12 for displacing the position of the annular flange 30 to the rotation driving part from a first state.

Description

  The present invention relates to a rotary pump that pumps fluid by rotation of a drive shaft and a driven shaft.

  For example, a rotary pump is known as a device for transferring a fluid such as a food raw material (for example, see Patent Document 1).

  Such a rotary pump is attached to a base portion fixed to a floor surface or the like together with a rotary drive unit such as a motor. A rotary pump has a drive shaft connected to a rotation shaft such as a motor, and a driven shaft that is driven to rotate relative to the drive shaft. A drive rotor and a driven rotor are attached to the drive shaft and the driven shaft, respectively. Yes. The fluid to be transferred is introduced between the driving rotor and the driven rotor through an inflow hole provided in the outer peripheral portion of the pump, is pressurized in the gear box, and flows out from the outflow hole on the side opposite to the inflow hole. The

  Generally, there are two known rotary pumps having different arrangements of drive shafts and driven shafts. That is, there are a configuration in which the drive shaft and the driven shaft are arranged vertically with respect to the base portion, and a configuration in which the drive shaft and the driven shaft are arranged horizontally with respect to the base portion.

  In the configuration in which the drive shaft and the driven shaft are arranged vertically with respect to the base portion, the inflow / outflow directions of the fluid to be transferred are horizontal with respect to the base portion. On the other hand, in the configuration in which the drive shaft and the horizontal shaft are arranged horizontally with respect to the base portion, the inflow / outflow directions of the fluid to be transferred are perpendicular to the base portion.

JP 2010-138824 A

  The above-described rotary pump has the following problems. That is, the drive shaft and the driven shaft are accommodated while being supported by a gear box fixed to the base portion. When the fluid inflow / outflow direction is set to be horizontal with respect to the base portion, a gear box is required that accommodates the drive shaft and the driven shaft while being vertically supported with respect to the base portion. On the other hand, when the inflow / outflow direction is set to be perpendicular to the base portion, a gear box that accommodates the drive shaft and the driven shaft side by side horizontally with respect to the base portion is required.

  Therefore, it is necessary to use different gearboxes for the rotary pump whose fluid inflow / outflow direction is horizontal with respect to the base portion and the rotary pump whose vertical direction is vertical. For this reason, once assembled as a rotary pump, there is a problem that the inflow / outflow direction cannot be easily changed.

  Accordingly, an object of the present invention is to provide a rotary pump that can easily change the inflow / outflow direction of a fluid even after being assembled on a base portion.

  In order to solve the above problems and achieve the object, the rotary pump of the present invention is configured as follows.

  A base portion having a flat mounting surface, a rotational drive unit disposed on the mounting surface and having a rotational axis along the mounting surface, and a central axis disposed on the mounting surface and parallel to the rotational axis. And an annular flange having a first fixed position and a second fixed position that are spaced apart from each other by a predetermined angle around the central axis, and a fitting portion that can be fitted to the inner peripheral surface of the annular flange. A long cylindrical gear box body that is coaxially provided and rotatable around the central axis, a flange portion provided on the outer periphery of the gear box body adjacent to the fitting portion, and the flange portion A fixing portion for fixing the annular flange and the flange portion selectively between a first state in which the first fixing position is fixed and a second state in which the second fixing position is fixed; Flow provided on the outer peripheral surface of the gearbox body A gear box having a hole and an outflow hole, and being supported while being supported by the gear box, and in the first state, is coaxially connected to the rotating shaft at a first shaft position that is an eccentric position with respect to the central axis, In the second state, a drive shaft that is coaxially connected to the rotation shaft at a second shaft position, and a shaft that is rotatably supported about the axis parallel to the central axis and that is supported by the gear box, A driven shaft that rotates in a reverse direction with respect to the drive shaft, and the central axis from the first state by a relative distance with respect to the central axis between the first axis position and the second axis position. A shaft position adjusting means for displacing the position of the annular flange with respect to the rotation drive unit in a direction from the second shaft position to the first shaft position when used as a reference is provided.

  According to the present invention, it is possible to easily change the inflow / outflow direction of the fluid even after being assembled on the base portion.

The perspective view which simplifies and shows the 1st state of the rotary pump which concerns on one embodiment of this invention. The perspective view which simplifies and shows the 2nd state of the rotary pump which concerns on one embodiment of this invention. The top view which shows the 1st state of the rotary pump. The side view which cuts and shows the 1st state of the rotary pump partially. Sectional drawing which shows the pump part of the 1st state of the rotary pump. The rear view which shows the inside of the oil chamber of the 1st state of the rotary pump. Explanatory drawing which shows the attachment position of the annular flange of the rotary pump. The front view which shows the same annular flange. The longitudinal cross-sectional view which shows the same annular flange. Explanatory drawing which shows the inflow / outflow direction in the 1st state of the rotary pump. Explanatory drawing which shows the inflow / outflow direction in the 1st state of the rotary pump. The top view which shows the 2nd state of the rotary pump. The side view which cuts and shows the 2nd state of the rotary pump partially. Sectional drawing which shows the pump part of the 2nd state of the rotary pump. The rear view which shows the inside of the oil chamber of the 2nd state of the rotary pump. Explanatory drawing which shows the inflow / outflow direction in the 2nd state of the rotary pump. Explanatory drawing which shows the inflow / outflow direction in the 2nd state of the rotary pump. The perspective view which simplifies and shows the other state of the rotary pump which concerns on one embodiment of this invention.

  1A, FIGS. 2 to 5, FIGS. 9 and 10 are views showing a first state of the rotary pump 1, FIGS. 1B and 11 to 16 are views showing a second state of the rotary pump 1, and FIG. 6 will be described later. The figure which shows the attachment position of the annular flange 30, FIG. In the drawing, C indicates the central axis of the annular flange 30.

  The following description of the configuration of the rotary pump 1 will be described with reference to FIGS. 1A and 2 to 10. In the following description, the annular flange 30 side will be described as the distal end side and the opposite side to the distal end side will be described as the proximal end side with respect to the motor 20 described later.

  As shown in FIG. 1A, the rotary pump 1 includes a base unit 10 attached to a fixed structure K such as a floor surface, a motor (rotary drive unit) 20 attached to the base unit 10, and a base unit 10. It has an attached annular flange 30 and a pump body 40 attached to the annular flange 30 and driven by the rotation of the motor 20.

  The base portion 10 has a flat mounting surface 11 formed on the side opposite to the fixed structure K. The mounting surface 11 is provided with an axial position adjusting portion (axial position adjusting means) 12.

  As shown in FIGS. 2, 3, and 6, the shaft position adjustment unit 12 is a horizontal direction adjustment unit (horizontal direction adjustment) that adjusts the position of the annular flange 30 along the mounting surface 11 and perpendicular to the central axis C. Means) 13 and a spacer 17 that adjusts the relative position of the central axis C and a rotating shaft 21 to be described later in a direction perpendicular to the mounting surface 11. The horizontal adjustment unit 13 includes a first attachment position 14, a second attachment position 15, and a third attachment position 16 provided along a direction perpendicular to the central axis C and a direction parallel to the attachment surface 11. have. The shaft position adjustment unit 12 has a function of adjusting the position of the annular flange 30 with respect to the mounting surface 11.

  As shown in FIG. 4, the first attachment position 14 and the second attachment position 15 are arranged so as to be displaced by a dimension R between the central axis C and the drive shaft 80. The third attachment position 16 is arranged so as to be displaced from the first attachment position 14 by a dimension R on the opposite side to the second attachment position 15.

  The height of the spacer 17 from the mounting surface 11 is a dimension R as shown in FIG.

  In the first state, the annular flange 30 is fixed to the first attachment position 14 via the spacer 17. In the second state, as shown at 30A and 31A in FIG.

  As shown in FIG. 3, the motor 20 is fixed to the mounting surface 11 via a spacer 17. The motor 20 has a rotating shaft 21 that protrudes in the front end side of the motor 20 in parallel with the mounting surface 11. The rotary shaft 21 is connected to a drive shaft 80 described later. The motor 20 has a function of rotating the drive shaft 80 via the rotation shaft 21.

  The annular flange 30 is located on the front end side of the motor 20 on the mounting surface 11. As shown in FIGS. 2 and 4, the annular flange 30 is fixed to the first attachment position 14 in the first state.

  The annular flange 30 has legs 31 that are attached to the attachment surface 11. The cross-sectional shape in the direction perpendicular to the central axis C of the inner peripheral surface of the annular flange 30 is formed in an annular shape with the central axis C as the center, as shown in FIG.

  The annular flange 30 has a first fixed position 33 and a second fixed position 34 that are separated by 90 degrees (predetermined angle) from each other around the central axis C. In the first fixed position 33 and the second fixed position 34, a first bolt hole 35 and a second bolt hole 36 that penetrate in a direction parallel to the central axis C are formed, respectively.

  A third bolt hole 37 penetrating in the direction of the central axis C is provided at a position of the annular flange 30 that is symmetrical to the first bolt hole 35 with respect to the central axis C. Further, a fourth bolt hole 38 penetrating in a direction parallel to the central axis C is provided at a position of the annular flange 30 that is symmetrical to the second bolt hole 36 with respect to the central axis C.

  As shown in FIG. 3, the pump body 40 is formed on the gear box 50 fixed to the annular flange 30, the pump portion 60 formed on the distal end side of the gear box 50, and the proximal end side of the gear box 50. And an oil chamber 70.

  The gear box 50 includes a flange portion 51 fixed to the annular flange 30 and a cylindrical gear box main body 52 provided on the inner peripheral portion of the flange portion 51. On the outer peripheral surface of the gear box body 52, a fitting portion 53 that fits the annular flange 30 is formed adjacent to the flange portion 51 of the gear box body 52. The cross-sectional shape of the fitting portion 53 in the direction perpendicular to the central axis C is formed in a circular shape with the central axis C as the center. For this reason, the gear box 50 is formed to be rotatable with respect to the annular flange 30 about the central axis C in a state where the fitting portion 53 is fitted to the annular flange 30.

  As shown in FIG. 4, the flange portion 51 has a first fixing hole (fixing portion) 54, a second fixing hole 55, a third fixing hole 56, and a fourth fixing hole 57 penetrating in the central axis C direction. Is provided. The first fixing hole 54 and the second fixing hole 55 are separated from each other by 90 degrees around the central axis C. The third fixing hole 56 is provided at a symmetrical position with respect to the first fixing hole 54 with respect to the central axis C. The fourth fixing hole 57 is provided at a symmetrical position with respect to the second fixing hole 55 with respect to the central axis C.

  In the first state, the first fixing hole 54, the second fixing hole 55, the third fixing hole 56, and the fourth fixing hole 57 include a first bolt hole 35, a second bolt hole 36, a third bolt hole 37, 4 bolt holes 38 are positioned respectively.

  A pump unit 60 is formed on the distal end side of the gear box 50. The pump portion 60 has an inflow hole 61 through which a fluid flows in a direction perpendicular to the central axis C, and an outflow hole 62 formed at a position symmetrical to the inflow hole 61 with respect to the central axis C and through which the fluid flows out. doing. As shown in FIG. 4, the inflow hole 61 is located on the left side and the outflow hole 62 is located on the right side when viewed from the front side.

  As shown in FIG. 3, an oil chamber 70 is formed on the base end side of the gear box 50. The oil chamber 70 includes a cylindrical oil chamber main body 71 and a lid member 76 that covers the base end side of the oil chamber main body 71 in a liquid-tight manner. As shown in FIG. 5, the lubricant G is accommodated in the oil chamber 70.

  The oil chamber body 71 is formed with a first oil hole 72, a second oil hole 73, a third oil hole 74, and a fourth oil hole 75 that penetrate in the radial direction with respect to the central axis C. The first oil hole 72 is provided on the mounting surface 11 side in the first state. The second oil hole 73 is provided symmetrically with respect to the first oil hole 72 with respect to the central axis C in the first state.

  The third oil hole 74 is formed around the central axis C at a position 90 degrees away from the first oil hole 72. The fourth oil hole 75 is formed at a position symmetrical to the third oil hole 74 with respect to the central axis C. In the first state, the third oil hole 74 is located on the right side when viewed from the base end side, and the fourth oil hole 75 is located on the left side.

  The lid member 76 is made of a transparent material such as acrylic resin. Thereby, the inside of the oil chamber 70 is visible.

  The gear box main body 52 accommodates a drive shaft 80 that is pivotally supported around an axis parallel to the central axis C at an eccentric position with respect to the central axis C. The drive shaft 80 is coaxially connected to the rotary shaft 21 and is driven to rotate by the motor 20. A drive rotor 81 housed in the pump unit 60 is provided at the tip of the drive shaft 80. A drive gear 82 accommodated in the oil chamber 70 is provided at the base end portion of the drive shaft 80.

  A driven shaft 90 that is driven and rotated in the reverse direction with respect to the drive shaft 80 is accommodated at a position symmetrical to the drive shaft 80 with respect to the central axis C of the gear box body 52. A driven rotor 91 housed in the pump unit 60 is provided at the tip of the driven shaft 90. A driven gear 92 that is housed in the oil chamber 70 and meshes with the drive gear 82 is provided at the base end portion of the driven shaft 80.

  In the first state, the rotary pump 1 is configured such that the drive shaft 80 and the driven shaft 90 are arranged vertically with respect to the mounting surface 11. The inflow hole 61 and the outflow hole 62 are arranged along a direction parallel to the mounting surface 11. In the first state, the lubricant G flows in from the second oil hole 73 and flows out from the first oil hole 72.

  In the first state, the rotary pump 1 rotates and rotates the rotating shaft 21 clockwise as viewed from the front side, as shown by arrows Y1 and Y2 in FIG. The fluid is sucked from the inflow hole 61 by the expansion of the configured space, and the fluid is discharged from the outflow hole 62 by the compression of the same space.

  In addition, the rotary pump 1 can make the inflow / outflow direction reverse by making the rotation direction of the rotating shaft 21 counterclockwise in front view from the front end side. That is, as indicated by arrows Y3 and Y4 in FIG. 10, it is possible to allow fluid to flow in from the outflow hole 62 and out from the inflow hole 61.

  The rotary pump 1 can be changed from the first state described above to the second state described below. In addition, in the following description, it demonstrates using FIG. 1B and FIGS. 11-16 which show the 2nd state of the rotary pump 1, comparing with FIG. 1A and FIGS.

  In the second state, the rotary pump 1 has the annular flange 30 fixed to the second attachment position 15 as shown in FIG. At this time, as shown in FIG. 12, the spacer 17 located between the mounting surface 11 and the motor 20 in the first state is removed.

  As shown in FIGS. 4 and 13, the pump body 40 is rotated 90 degrees clockwise with respect to the annular flange 30 from the first state as viewed from the front side.

  When the drive shaft 80 is changed from the first state to the second state, the drive shaft 80 is displaced by a dimension R downward and a dimension R rightward with respect to the annular flange 30 as viewed from the front side. The annular flange 30 is displaced by a dimension R to the left with respect to the mounting surface 11 in a front view from the distal end side. Therefore, the position of the drive shaft 80 with respect to the mounting surface 11 in the second state is displaced downward by R from the first state. Also in the second state, the drive shaft 80 is coaxially connected to the rotating shaft 21. Is done.

  In the second state, the rotary pump 1 has a drive shaft 80 and a driven shaft 90 arranged horizontally with respect to the mounting surface 11. Further, the inflow hole 61 is disposed on the upper side, and the outflow hole 62 is positioned on the lower side.

  In the second state, as shown in FIG. 14, the third oil hole 74 is located above and the fourth oil hole 75 is located below. Accordingly, the lubricant G flows from the third oil hole 74 and flows out from the fourth oil hole 75.

  In the second state, the rotary pump 1 is driven by the drive rotor 82 and the driven rotor 92 as shown by arrows Y5 and Y6 in FIG. The fluid is sucked from the inflow hole 61 by the expansion of the configured space, and the fluid is discharged from the outflow hole 62 by the compression of the same space.

  In addition, the rotary pump 1 can make the inflow / outflow direction reverse by rotating the rotation direction of the rotating shaft 21 counterclockwise when viewed from the front side. That is, as shown by arrows Y 7 and Y 8 in FIG. 16, it is possible to allow fluid to flow in from the outflow hole 62 and out from the inflow hole 61.

  In addition, as shown in FIG. 17, the rotary pump 1 is provided with the spacer 17 between the annular flange 30 and the attachment surface 11, and the inflow / outflow direction can be attached by attaching the annular flange 30 to the first attachment position 14. It can be horizontal to the surface 11. Further, by fixing the motor 20 to the mounting surface 11 and fixing the annular flange 30 to the third mounting position 16, the inflow / outflow directions can be made perpendicular to the mounting surface.

  Furthermore, the change between the first state and the second state described above, that is, the change of the inflow / outflow direction is performed by moving the annular flange 30 in the horizontal direction with respect to the mounting surface 11. The inflow / outflow direction can also be changed by fixing to the mounting surface 11 and moving the motor 20 in the horizontal direction. In other words, by providing a plurality of bolt holes for fixing the motor 20 on the mounting surface 11 and changing the mounting position on the mounting surface 11 of the motor 20, the inflow / outflow direction can be changed.

  As described above, according to the rotary pump 1 according to the embodiment of the present invention, the pump body 40 is formed so as to be rotatable with respect to the annular flange 30, whereby the drive shaft 80 and the driven shaft 90 are arranged vertically. Direction and horizontal direction can be selected. Further, the mounting position of the annular flange 30 with respect to the base portion 10 can be changed by the shaft position adjusting portion 12. Thus, the drive shaft 80 and the motor 20 are connected regardless of whether the drive shaft 80 and the driven shaft 90 are arranged in the vertical direction or the horizontal direction. For this reason, even if it is the state assembled on the base part 10, the inflow / outflow direction of the fluid can be easily changed between the horizontal direction and the vertical direction.

  Moreover, by forming the lid member 76 of the oil chamber 70 from a transparent material, the inside of the oil chamber 70 can be visually recognized regardless of the inflow / outflow direction of the fluid. For this reason, regardless of the inflow / outflow direction, the state of deterioration of the lubricant G can be confirmed. Further, by forming the first oil hole 72, the second oil hole 73, the third oil hole 74, and the fifth oil hole 75 in the oil chamber 70, supply of the lubricant G regardless of the inflow / outflow direction of the fluid.・ Discharge is possible.

  As described above, according to the present invention, the inflow / outflow direction of the fluid can be easily changed.

  The present invention is not limited to the above embodiment. For example, in the example described above, the rotary pump in which the fluid inflow direction can be selected to be horizontal or vertical with respect to the base portion has been described. However, the inflow / outflow directions are arranged obliquely with respect to the base portion. Of course, the present invention can be applied in the same manner. Of course, various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Rotary pump, 10 ... Base part, 11 ... Mounting surface, 12 ... Axis position adjustment means, 13 ... Horizontal direction adjustment means, 14 ... 1st attachment position, 15 ... 2nd attachment position, 16 ... 3rd Mounting position, 17 ... spacer, 20 ... motor, 21 ... rotating shaft, 30 ... annular flange, 31 ... leg, 33 ... first fixing position, 34 ... second fixing position, 35 ... first bolt hole, 36 ... first 2 bolt holes, 37 ... 3rd bolt hole, 38 ... 4th bolt hole, 40 ... pump body, 50 ... gear box, 51 ... flange part, 52 ... gear box body, 53 ... fitting part, 54 ... first fixed Holes 55... Second fixing hole 56. Third fixing hole 57. Fourth fixing hole 60. Pump part 61. Inlet hole 62. Outlet hole 70. Oil chamber 71 71 Oil chamber body 72 ... 1st oil hole, 73 ... 2nd oil hole, 74 ... 3rd oil hole, 5 ... 4th oil hole, 76 ... Lid member, 80 ... Drive shaft, 81 ... Drive rotor, 82 ... Drive gear, 90 ... Drive shaft, 91 ... Drive rotor, 92 ... Drive gear, K ... Fixed structure, C ... Central axis.

Claims (4)

A base portion having a planar mounting surface;
A rotation drive unit disposed on the mounting surface and having a rotation axis along the mounting surface;
An annular flange disposed on the mounting surface, having a central axis parallel to the rotational axis and having a first fixed position and a second fixed position spaced apart from each other by a predetermined angle around the central axis;
A fitting portion that can be fitted to the inner peripheral surface of the annular flange is formed, is provided coaxially with the central axis, and is a cylindrical gear box body that is rotatable about the central axis. A flange portion provided adjacent to the fitting portion on the outer periphery, a first state in which the first fixing position is fixed, and a second state in which the second fixing position is fixed And a gear box having an inflow hole and an outflow hole provided in an outer peripheral surface of the gear box body, the annular flange and a fixing portion for fixing the flange portion selectively,
The shaft is accommodated while being supported by the gear box, and in the first state, is coaxially connected to the rotating shaft at a first shaft position that is an eccentric position with respect to the central axis, and in the second state, the second shaft position. A drive shaft coaxially connected to the rotating shaft;
A driven shaft that is rotatably supported about the axis parallel to the central axis and is supported while being supported by the gear box;
From the first state, the first distance from the second axis position relative to the central axis by the relative distance between the first axial position and the second axial position relative to the central axis. A rotary pump comprising: an axial position adjusting means for displacing a position of the annular flange with respect to the rotational drive unit in a direction toward the axial position. The shaft position adjusting means is provided on the mounting surface, and is separated from each other by a dimension in a direction along the mounting surface between the first shaft position and the second shaft position with respect to the central axis. A first mounting position, a second mounting position, and
A dimension that can be disposed between the annular flange and the mounting surface and is perpendicular to the mounting surface between the first shaft position and the second shaft position with respect to the central axis. The rotary pump according to claim 1, further comprising a spacer having a height with respect to the mounting surface. An oil chamber that contains a lubricant is provided on the rotational drive unit side of the gear box,
The drive shaft has a drive gear accommodated in the oil chamber,
The driven shaft is housed in the oil chamber and has a driven gear that meshes with the drive gear;
2. The rotary pump according to claim 1, wherein a transparent lid member that covers the oil chamber is provided on the rotation drive unit side of the oil chamber. In the outer periphery of the oil chamber, in the first state, a first oil hole located on the mounting surface side and penetrating in a radial direction with respect to the central axis;
In the first state, a second oil hole located on the opposite side of the mounting surface and penetrating in a radial direction with respect to the central axis;
In the second state, a third oil hole located on the mounting surface side and penetrating in a radial direction with respect to the central axis;
4. The rotary pump according to claim 3, wherein, in the second state, a fourth oil hole that is located on a side opposite to the mounting surface and penetrates in a radial direction with respect to the central axis is provided.

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